Herndon, VA

2:51 PM EDT on May 19, 2013 (GMT -0400)
Elev: 338 ft
Lon: 77.4° W
Lat: 38.9° N
Source
Rapid Fire Updates™
 Updated 2:51 PM EDT Get Free Weather Stickers® Share:
Your Custom Weather Sticker®

Copy the following lines of HTML:
Get more styles and options for your Weather Sticker® here.
News
Mice Return From a Month in Space
May 19, 2013
Mice and other critters return from a month long stay in space.
Heavy Rains Cause Flooding in North Georgia
May 19, 2013
Some locations have seen 5 to 6 inches of rainfall.
May Severe Outbreak: Day 1 Recap
May 19, 2013
See the tornado, damaging wind and large hail reports on our interactive map.
Tornado Hunt Captures Multiple Tornadoes in Progress
May 19, 2013
See images and video from the Plains as severe thunderstorms left their mark.
Tornado Warning Drought May End This Weekend
May 19, 2013
Parts of the Plains, Midwest have seen a startling absence of tornadoes.
Real-Time Updates: Severe Weather Outbreak
May 18, 2013
The latest breaking news, tornado warnings, photos and more.
64, Including Saudi Arabian Woman, Scale Mount Everest
May 18, 2013
More than five dozens climbers successfully scaled Mount Everest.
Flash Flooding Swamps Parts of Alabama
May 19, 2013
The photos, reports, and perspective behind flooding rain in parts of Alabama Saturday.
Active Volcano Captured in Stunning Photos
May 17, 2013
Indonesian-born and Qatar-based photographer Helminadia Ranford captured breathtaking photos of Mt. Bromo, an active volcano in East Java, Indonesia.
NASA: New Pump Resolves Big Space Station Leak
May 17, 2013
A spacewalk has repaired a leak on the International Space Station, NASA said.
Where Winter Won't End
May 18, 2013
Spring warmth has arrived in most of the U.S., except this state.
Storm Damage near Shreveport
May 16, 2013
Storm storms leave damage near Shreveport, Louisiana. See photos and tweets.
Texas Tornadoes: As They Happened
May 18, 2013
We walk through the full timeline of the Texas tornadoes on May 15, 2013.
By Man or Nature, Places That Will Never Be the Same
May 16, 2013
Where Earth has been changed forever.
Smaller Glaciers Boost Sea Level as Much as the Giants
May 16, 2013
Thousands of small glaciers, unconnected to continental-scale ice sheets, have dumped about 260 million tons of meltwater into the ocean annually between 2003 and 2009.
Deadly Texas Outbreak May Mark End of Tornado Drought
May 16, 2013
After months with record-low activity, the 2013 tornado season roared back with a vengeance on Wednesday as at least 10 twisters touched down across portions of north-central Texas, killing at least 6 and injuring dozens more.
Alaska Volcano Shoots Ash 15,000 Feet into Air
May 18, 2013
Steam and ash clouds are occasionally rising to 20,000 feet from an active Alaska volcano.
Mexico Volcano Registers More Seismic Activity
May 16, 2013
Seismic activity is continuing at the Popocatepetl volcano near Mexico City and authorities say they have readied shelters and identified evacuation routes in case they should be needed.
Cyclone Mahasen Weakens After Killing 45 in Bangladesh
May 16, 2013
Cyclone Mahasan weakened Thursday afternoon into a tropical storm and then dissipated, causing far less damage than had been feared as it passed over Bangladesh and spared Myanmar almost entirely, meteorological officials said.
Worldwide Cleanup Reveals Trashed Beaches (PHOTOS)
May 17, 2013
The Ocean Conservancy releases stunning photos from its recent international beach cleanup day.
More News Articles
Weather Summary
Kari Kiefer
Weather Underground Forecast for Sunday, May 19, 2013.

Severe thunderstorm activity will persist for the Plains on Sunday as a broad low pressure system continues trekking through the region. The system will move from the Northern Plains and into the Great Lakes, creating two frontal boundaries. The warm front associated with this system will extend eastward over the Great Lakes and into the Northeast, kicking up scattered showers and thunderstorms into Sunday night. At the same time, a cold front extends southward from this system which will move off the Central Rockies and into the Central and Southern Plains. Counter-clockwise flow around this broad system will pull moisture and energy into the Plains from the Gulf of Mexico. This will support moderate to heavy showers and thunderstorms in between these two fronts. This system has a history of severe thunderstorm development across the Northern and Central Plains, thus, there is a moderate risk of severe thunderstorm development with large hail, damaging winds, and multiple tornadoes. These severe thunderstorms will most likely develop across central and eastern Oklahoma, through eastern Kansas, and into western Missouri. A slight risk of severe storm development remains in effect from northern Texas, through southern Minnesota and Wisconsin on Sunday. At the same time, the back side of this system will continue spreading moisture over the Intermountain West and Rockies. This will trigger more showers with isolated thunderstorms over the region through Sunday evening.

Meanwhile in the East, a trough of low pressure slowly moves over the East Coast and maintains shower and thunderstorm activity for the Mid-Atlantic states through the Northeast.
Weather Underground Forecast for Sunday, May 19, 2013.

Severe thunderstorm activity will persist for the Plains on Sunday as a broad low pressure system continues trekking through the region. The system will move from the Northern Plains and into the Great Lakes, creating two frontal boundaries. The warm front associated with this system will extend eastward over the Great Lakes and into the Northeast, kicking up scattered showers and thunderstorms into Sunday night. At the same time, a cold front extends southward from this system which will move off the Central Rockies and into the Central and Southern Plains. Counter-clockwise flow around this broad system will pull moisture and energy into the Plains from the Gulf of Mexico. This will support moderate to heavy showers and thunderstorms in between these two fronts. This system has a history of severe thunderstorm development across the Northern and Central Plains, thus, there is a moderate risk of severe thunderstorm development with large hail, damaging winds, and multiple tornadoes. These severe thunderstorms will most likely develop across central and eastern Oklahoma, through eastern Kansas, and into western Missouri. A slight risk of severe storm development remains in effect from northern Texas, through southern Minnesota and Wisconsin on Sunday. At the same time, the back side of this system will continue spreading moisture over the Intermountain West and Rockies. This will trigger more showers with isolated thunderstorms over the region through Sunday evening.

Meanwhile in the East, a trough of low pressure slowly moves over the East Coast and maintains shower and thunderstorm activity for the Mid-Atlantic states through the Northeast.
More News Articles

Herndon Weather at a Glance

Updated 2:51 PM EDT
Elevation
340 ft
Report Station
You are about to report this weather station for bad data.

Please select the information which is incorrect and click 'Submit' otherwise click 'Cancel'.

— Cancel

Now
Overcast
Overcast
Temperature
72.7 °F
Feels Like 72 °F
Wind(mph)
5.4
Sunrise / Set
5:53 AM
8:19 PM
Moon
Waxing Gibbous
Today
Rain Showers 79 °F
Rain Showers
70% chance of precipitation
Tonight
Rain Showers 64 °F
Rain Showers
60% chance of precipitation
Tomorrow
Chance of a Thunderstorm 81 | 64 °F
Chance of T-storms
40% chance of precipitation
Tuesday
Partly Cloudy 86 | 66 °F
Partly Cloudy
Wednesday
Chance of a Thunderstorm 90 | 68 °F
Chance of a Thunderstorm
20% chance of precipitation
Thursday
Partly Cloudy 86 | 66 °F
Partly Cloudy
Today is forecast to be Warmer than yesterday.
Conditions
Pressure
30.16 in
Visibility
3.0 miles
Clouds
Mostly Cloudy 1000 ft
Overcast 1500 ft
Moisture
Humidity
84%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KIAD 191752Z 16003KT 3SM BKN010 OVC015 20/17 A3016 RMK AO2 SFC VIS 10 SLP212 60000 T02000172 10200 20156 58013
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Heat Index
72 °F
Dew Point
68 °F
Wind
Speed / Dir
5.4 mph from SE
Wind Gust
8.3 mph
Health
UV
3 out of 16
Pollen
.40 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Good
Flu Activity
Sporadic
View Flu Map
Loading…
Source: BestForecast
Descriptive Forecast
Sunday
rain Overcast with rain showers. Fog early. High of 79F. Winds from the SSE at 5 to 10 mph. Chance of rain 70%.
Sunday Night
nt_rain Overcast with rain showers, then a chance of rain after midnight. Fog overnight. Low of 64F. Winds from the SSE at 5 to 10 mph. Chance of rain 60%.
Monday
chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 81F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.
Monday Night
nt_partlycloudy Partly cloudy. Low of 64F. Winds from the SSW at 5 to 10 mph.
Tuesday
partlycloudy Partly cloudy. High of 86F. Winds less than 5 mph.
Tuesday Night
nt_chancetstorms Mostly cloudy in the evening, then overcast with a chance of a thunderstorm and rain. Fog overnight. Low of 66F. Winds less than 5 mph. Chance of rain 50%.
Wednesday
partlycloudy Overcast in the morning, then mostly cloudy with a chance of a thunderstorm and rain. Fog early. High of 90F. Winds from the South at 5 to 10 mph. Chance of rain 20%.
Wednesday Night
nt_partlycloudy Partly cloudy with a chance of a thunderstorm and rain. Low of 68F. Winds from the South at 5 to 10 mph. Chance of rain 20%.
Thursday
partlycloudy Mostly cloudy. High of 86F. Winds from the SSW at 10 to 15 mph.
Thursday Night
nt_chancetstorms Mostly cloudy with a chance of a thunderstorm. Low of 66F. Winds from the SSW at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.
Friday
chancetstorms Partly cloudy with a chance of a thunderstorm. High of 84F. Winds from the WSW at 5 to 10 mph shifting to the WNW in the afternoon. Chance of rain 50%.
Friday Night
nt_clear Clear with a chance of a thunderstorm. Low of 57F. Winds from the NNW at 5 to 10 mph. Chance of rain 20%.
Saturday
partlycloudy Partly cloudy. High of 73F. Winds from the North at 5 to 15 mph.
Saturday Night
nt_clear Clear. Low of 54F. Winds from the NNE at 5 to 10 mph.
Sunday
clear Clear. High of 73F. Winds from the NNE at 5 to 10 mph.
Sunday Night
nt_clear Clear. Low of 50F. Winds less than 5 mph.
Monday
partlycloudy Partly cloudy. High of 70F. Winds less than 5 mph.
Monday Night
nt_chancerain Mostly cloudy with a chance of rain. Low of 52F. Winds less than 5 mph. Chance of rain 50% with rainfall amounts near 0.4 in. possible.
Tuesday
chancerain Overcast with a chance of rain. High of 73F. Winds from the SE at 5 to 10 mph. Chance of rain 50%.
Tuesday Night
nt_chancetstorms Overcast with a chance of a thunderstorm. Fog overnight. Low of 57F. Winds from the SSE at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.9 in. possible.
Wednesday
chancetstorms Mostly cloudy with a chance of a thunderstorm. High of 79F. Winds from the South at 5 to 10 mph. Chance of rain 40%.
Wednesday Night
nt_partlycloudy Clear with a chance of a thunderstorm. Fog overnight. Low of 57F. Winds less than 5 mph. Chance of rain 20%.
Loading…
 
First Previous Last Next  
Updated:  
 
 

 

Weather Forecast for Herndon VA

View Calendar 10-Day Forecast for station KVAOAKHI5

Sunday, 19
Rain Showers
79 | 64 °F
Rain Showers
Chance of
Precipitation
70%
Monday, 20
Chance of a Thunderstorm
81 | 64 °F
Chance of T-storms
Chance of
Precipitation
40%
Tuesday, 21
Partly Cloudy
86 | 66 °F
Partly Cloudy
Chance of
Precipitation
10%
Wednesday, 22
Chance of a Thunderstorm
90 | 68 °F
Chance of a Thunderstorm
Chance of
Precipitation
20%
Thursday, 23
Partly Cloudy
86 | 66 °F
Partly Cloudy
Chance of
Precipitation
0%
Friday, 24
Chance of a Thunderstorm
84 | 57 °F
Chance of T-storms
Chance of
Precipitation
50%
Saturday, 25
Partly Cloudy
73 | 54 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 26
Clear
73 | 50 °F
Clear
Chance of
Precipitation
0%
Monday, 27
Partly Cloudy
70 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Tuesday, 28
Chance of Rain
73 | 57 °F
Chance of Rain
Chance of
Precipitation
50%
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Sunday
rain Overcast with rain showers. Fog early. High of 79F. Winds from the SSE at 5 to 10 mph. Chance of rain 70%.
Sunday Night
nt_rain Overcast with rain showers, then a chance of rain after midnight. Fog overnight. Low of 64F. Winds from the SSE at 5 to 10 mph. Chance of rain 60%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 62 | 57 70 | 63 69 | 63 68 | 63
Wind 4 mph East 6 mph ESE 10 mph SSE 7 mph SSE
Humidity 88% 77% 81% 81%
Chance of Precip. 50% 70% 70% 60%
Cloud Cover 100% 100% 96% 97%
Conditions Rain Showers Rain Showers Rain Showers Chance of Rain
Sunrise & Sunset
5:53 AM
8:19 PM
The quality of the forecasted high temperature for this day is excellent. MaxT RMSE [1.46], Average RMSE [2.76]
The National Weather Service forecast quality is good. MaxT RMSE [1.87], Average RMSE [2.37] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Monday
chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 81F. Winds from the SSW at 5 to 10 mph. Chance of rain 40%.
Monday Night
nt_partlycloudy Partly cloudy. Low of 64F. Winds from the SSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 66 | 63 74 | 63 78 | 63 69 | 63
Wind 8 mph South 8 mph SSW 8 mph SSW 5 mph SSW
Humidity 87% 68% 61% 78%
Chance of Precip. 60% 40% 40% 10%
Cloud Cover 100% 83% 75% 69%
Conditions Chance of Rain Chance of a Thunderstorm Chance of a Thunderstorm Mostly Cloudy
Sunrise & Sunset
5:52 AM
8:20 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.89], Average RMSE [3.40]
The National Weather Service forecast quality is good. MaxT RMSE [2.45], Average RMSE [2.67] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy. High of 86F. Winds less than 5 mph.
Tuesday Night
nt_chancetstorms Mostly cloudy in the evening, then overcast with a chance of a thunderstorm and rain. Fog overnight. Low of 66F. Winds less than 5 mph. Chance of rain 50%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 65 | 63 79 | 66 84 | 65 72 | 69
Wind 2 mph SW 3 mph WSW 2 mph SW 5 mph SSE
Humidity 88% 62% 52% 89%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 60% 44% 55% 81%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy
Sunrise & Sunset
5:52 AM
8:20 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.26], Average RMSE [2.54]
The National Weather Service forecast quality is fair. MaxT RMSE [2.68], Average RMSE [2.81] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Wednesday
partlycloudy Overcast in the morning, then mostly cloudy with a chance of a thunderstorm and rain. Fog early. High of 90F. Winds from the South at 5 to 10 mph. Chance of rain 20%.
Wednesday Night
nt_partlycloudy Partly cloudy with a chance of a thunderstorm and rain. Low of 68F. Winds from the South at 5 to 10 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 67 | 67 80 | 71 82 | 72 73 | 66
Wind 4 mph SE 7 mph South 9 mph SSW 9 mph SSW
Humidity 99% 73% 71% 80%
Chance of Precip. 40% 10% 20% 10%
Cloud Cover 96% 96% 51% 28%
Conditions Chance of a Thunderstorm Overcast Chance of a Thunderstorm Partly Cloudy
Sunrise & Sunset
5:51 AM
8:21 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.94], Average RMSE [3.17]
The National Weather Service forecast quality is fair. MaxT RMSE [3.11], Average RMSE [3.03] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Thursday
partlycloudy Mostly cloudy. High of 86F. Winds from the SSW at 10 to 15 mph.
Thursday Night
nt_chancetstorms Mostly cloudy with a chance of a thunderstorm. Low of 66F. Winds from the SSW at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.2 in. possible.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 69 | 64 79 | 66 79 | 67 70 | 67
Wind 10 mph SSW 13 mph SSW 12 mph SSW 10 mph SSW
Humidity 87% 64% 65% 90%
Chance of Precip. 10% 10% 10% 20%
Cloud Cover 27% 86% 48% 85%
Conditions Partly Cloudy Mostly Cloudy Partly Cloudy Chance of a Thunderstorm
Sunrise & Sunset
5:50 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.96], Average RMSE [3.81]
The National Weather Service forecast quality is poor. MaxT RMSE [3.71], Average RMSE [3.33] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Friday
chancetstorms Partly cloudy with a chance of a thunderstorm. High of 84F. Winds from the WSW at 5 to 10 mph shifting to the WNW in the afternoon. Chance of rain 50%.
Friday Night
nt_clear Clear with a chance of a thunderstorm. Low of 57F. Winds from the NNW at 5 to 10 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 66 | 64 76 | 65 80 | 65 64 | 59
Wind 7 mph SSW 4 mph West 8 mph NW 9 mph NNW
Humidity 93% 71% 62% 80%
Chance of Precip. 30% 20% 20% 10%
Cloud Cover 53% 68% 44% 1%
Conditions Chance of Rain Chance of Rain Chance of a Thunderstorm Clear
Sunrise & Sunset
5:50 AM
8:23 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.43], Average RMSE [3.85]
The National Weather Service forecast quality is poor. MaxT RMSE [3.57], Average RMSE [3.45] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Saturday
partlycloudy Partly cloudy. High of 73F. Winds from the North at 5 to 15 mph.
Saturday Night
nt_clear Clear. Low of 54F. Winds from the NNE at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 61 | 51 68 | 53 72 | 54 60 | 48
Wind 10 mph NW 10 mph North 7 mph NNE 3 mph NNE
Humidity 70% 55% 53% 66%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 6% 74% 6% 0%
Conditions Clear Mostly Cloudy Clear Clear
Sunrise & Sunset
5:49 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.58], Average RMSE [3.21]
The National Weather Service forecast quality is fair. MaxT RMSE [3.25], Average RMSE [3.43] : Use NWS
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Sunday
clear Clear. High of 73F. Winds from the NNE at 5 to 10 mph.
Sunday Night
nt_clear Clear. Low of 50F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 41 66 | 38 71 | 43 53 | 45
Wind 7 mph North 6 mph NNE 5 mph NE 3 mph ENE
Humidity 52% 37% 35% 71%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 3%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:48 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.21], Average RMSE [4.87]
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Monday
partlycloudy Partly cloudy. High of 70F. Winds less than 5 mph.
Monday Night
nt_chancerain Mostly cloudy with a chance of rain. Low of 52F. Winds less than 5 mph. Chance of rain 50% with rainfall amounts near 0.4 in. possible.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 45 65 | 47 64 | 51 57 | 52
Wind 3 mph NE 4 mph ENE 4 mph ESE 4 mph SE
Humidity 71% 51% 59% 85%
Chance of Precip. 0% 0% 0% 10%
Cloud Cover 10% 27% 55% 73%
Conditions Clear Partly Cloudy Partly Cloudy Mostly Cloudy
Sunrise & Sunset
5:48 AM
8:25 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [6.12], Average RMSE [5.22]
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Tuesday
chancerain Overcast with a chance of rain. High of 73F. Winds from the SE at 5 to 10 mph. Chance of rain 50%.
Tuesday Night
nt_chancetstorms Overcast with a chance of a thunderstorm. Fog overnight. Low of 57F. Winds from the SSE at 5 to 10 mph. Chance of rain 60% with rainfall amounts near 0.9 in. possible.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 54 67 | 56 70 | 59 60 | 60
Wind 3 mph SE 5 mph SE 6 mph SSE 6 mph SSE
Humidity 93% 66% 68% 100%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 83% 89% 93% 95%
Conditions Mostly Cloudy Overcast Overcast Fog
Sunrise & Sunset
5:47 AM
8:26 PM
Source: BestForecast at 9:40 AM EDT on May 19, 2013
Descriptive Forecast
Wednesday
chancetstorms Mostly cloudy with a chance of a thunderstorm. High of 79F. Winds from the South at 5 to 10 mph. Chance of rain 40%.
Wednesday Night
nt_partlycloudy Clear with a chance of a thunderstorm. Fog overnight. Low of 57F. Winds less than 5 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 61 | 61 72 | 64 75 | 67 65 | 65
Wind 5 mph SSE 6 mph South 6 mph South 5 mph South
Humidity 100% 74% 75% 100%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 97% 91% 78% %
Conditions Fog Overcast Mostly Cloudy Fog
Sunrise & Sunset
Sun does not rise
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 19, 2013 Max Temp Min Temp
Normal (KIAD) 76 °F 52 °F
Record (KIAD) 92 °F (1997) 36 °F (2002)
Yesterday 68 °F 59 °F
Yesterday's Heating Degree Days: 1
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
No recent earthquake activity has been reported nearby.
Minimum magnitude displayed is 2.5.
More information at USGS.gov
Air Quality
  Air Quality AQ Index Pollutant
Yesterday Good
OZONE
Yesterday Good
PM10
Current Good
PM2.5
Current Good
OZONE
Sunday Good
OZONE
Sunday Good
PM2.5
Monday Good
OZONE
Monday Good
PM2.5
Coastal Water Temperatures
Place Temperature
Washington, DC 64.9 °F
Baltimore, MD 66.0 °F
Solomons Island, MD 66.0 °F
Marine Forecast
Astronomy
May. 19, 2013 Rise Set
Actual Time 5:53 AM EDT 8:19 PM EDT
Civil Twilight 5:23 AM EDT 8:49 PM EDT
Nautical Twilight 4:45 AM EDT 9:27 PM EDT
Astronomical Twilight 4:04 AM EDT 10:09 PM EDT
Moon 2:24 PM EDT 2:12 AM EDT
Length Of Visible Light 15h 26m
Length of Day
14h 25m
Tomorrow will be 1m 37s longer.
Waxing Gibbous, 66% of the Moon is Illuminated
Today
Waxing Gibbous
May 25
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter
Visit Astronomy
Today's Extremes
State Highs State Lows
80 °F
Suffolk
80 °F
Oceana NAS
80 °F
Chesapeake
79 °F
Abingdon
79 °F
Newport News
55 °F
Hot Springs
55 °F
Winchester
59 °F
Orange
59 °F
Dulles Airport
59 °F
Fort Belvoir
Record Extremes
Snow Depth
Station Depth Elevation
No new snow has been reported.
Snow Depth Reports — Snow Depth Map
Follow us on Twitter Find us on Facebook Community
WunderPhotos®
Dirt Road
Lake Siskiyou
• • • • • • • • • •
Uploaded by: SKERT
1,612,864 photos uploaded!
Upload a photo now
Visit WunderPhotos
WunderBlogs®
Gifts From My Garden
By Proserpina 5 hours ago
Visit WunderBlogs
Travel & Activities
Travel Planning
Travel Planner Road Trip Planner
Destination? *
When are you going?
to
Is there an activity you would like to explore?
* Required field
View all Travel Tools
Aviation
City Temp. Conditions Updated
Dulles Airport 68 °F Overcast 1:52 PM EDT
Leesburg 68 °F Overcast 2:35 PM EDT
Manassas 70 °F Overcast 1:45 PM EDT
Fort Belvoir 73 °F Mostly Cloudy 2:38 PM EDT
View all Aviation Tools
Flight To ETA Status
SIL4052
Staunton/Waynesboro/Harrisonburg, VA 		KIAD 02:42PM On Time
POE725
Toronto, Ontario 		KIAD 02:43PM On Time
KLM651
Amsterdam 		KIAD 02:44PM On Time
TCF3527
Rochester, NY 		KIAD 02:52PM On Time
Flight Tracker by FlightAware FlightAware
View U.S. Airport Delays
Type Condition
Flight Rule: IFR (KIAD)
Wind Speed: 3.0 kts.
Wind Dir: 135° (SE)
Ceiling: 1000 ft

METAR KIAD 191752Z 16003KT 3SM BKN010 OVC015 20/17 A3016 RMK AO2 SFC VIS 10 SLP212 60000 T02000172 10200 20156 58013

View all Reports & Maps
Nearby Events
Event Date Forecast
Jason Masi 9:00 PM EDT
2013-04-16		 Chance of Rain, 69°F
Acoustic Tuesday 9:00 PM EDT
2013-04-16		 Chance of Rain, 69°F
Ringling Bros. and Barnum & Bailey: Dragons 7:00 PM EDT
2013-04-18		 Chance of a Thunderstorm, 73°F
Bobby Long 8:00 PM EDT
2013-04-18		 Mostly Cloudy, 70°F
Ringling Bros. and Barnum & Bailey: Dragons 7:00 PM EDT
2013-04-19		 Thunderstorm, 65°F
Ringling Bros. and Barnum & Bailey: Dragons 1:00 PM EDT
2013-04-19		 Overcast, 73°F
Event data courtesy eviesays.com
Sports
View all Sports Weather
Videos
Year In Weather 2012

Watch the nearly year-long satellite animation as Weather Underground calls out the most significant weather events of the past year, including Superstorm Sandy and Hurricane Isaac.

Visit Our Video Section
Weather Stations
Station Location Temp. Heat Index Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Chantilly Highlands, Herndon, VA 72.7 °F 72 °F 68 °F 84% SE  at  5.4 mph 0.00 in / hr 340 ft 2:51 PM EDT Rapid Fire  
Folkstone, Oak Hill, VA 70.6 °F - 68 °F 90% West  at  1.0 mph 0.00 in / hr 375 ft 2:51 PM EDT Rapid Fire  
Fox Mill, Herndon, VA 72.0 °F 77 °F 43 °F 35% SE  at  0.0 mph 0.00 in / hr 383 ft 2:51 PM EDT Rapid Fire  
Wind Power Cube, Chantilly, VA 75.9 °F 77 °F 67 °F 74% SE  at  3.8 mph 0.00 in / hr 203 ft 2:51 PM EDT Normal  
NonFedAWOS WASHINGTON DULLES , Dulles, VA 68 °F - 63 °F 84% SSE  at  3 mph 0.00 in / hr 1023 ft 1:52 PM EDT MADIS
Cedar Cove Cluster, Reston, VA 71.2 °F 71 °F 66 °F 83% NNW  at  0.0 mph 0.00 in / hr 350 ft 2:51 PM EDT Rapid Fire  
Fair Lakes / AJ4YI, Fairfax, VA 64.9 °F - 64 °F 98% North  at  0.0 mph 0.01 in / hr 420 ft 10:52 AM EDT Rapid Fire  
Golf Course Island, Reston, VA 69.6 °F - 64 °F 83% SE  at  0.0 mph 0.00 in / hr 390 ft 2:50 PM EDT Rapid Fire  
VADOT Site_G, Herndon, VA 69 °F - 63 °F 80% ESE  at  4 mph 0.00 in / hr 339 ft 2:04 PM EDT MADIS
Ridings at Blue Springs, Chantilly, VA 71.4 °F - 67 °F 86% East  at  0.0 mph 0.00 in / hr 303 ft 2:51 PM EDT Normal
VADOT Site_C, Oakton, VA 71 °F 71 °F 65 °F 81% North  at  - 0.00 in / hr 290 ft 2:07 PM EDT MADIS
APRSWXNET Reston VA , Herndon, VA 68 °F - 65 °F 90% NE  at  1 mph 0.00 in / hr 400 ft 2:18 PM EDT MADIS
Hawk Ridge Subdivision, Reston, VA 69.9 °F - 64 °F 83% SE  at  0.0 mph 0.00 in / hr 300 ft 2:50 PM EDT Normal
APRSWXNET Reston VA , Herndon, VA 67 °F - 64 °F 91% SSE  at  0 mph 0.00 in / hr 454 ft 2:18 PM EDT MADIS
Shaker Woods, Herndon, VA 67.5 °F - 65 °F 92% SE  at  2.2 mph 0.00 in / hr 387 ft 2:51 PM EDT Rapid Fire  
VADOT Site_E, Oakton, VA 71 °F - 67 °F 87% North  at  - 0.00 in / hr 353 ft 2:10 PM EDT MADIS
Falls Brook, Herndon, VA 71.4 °F 70 °F 67 °F 85% NNW  at  0.0 mph 0.00 in / hr 280 ft 2:50 PM EDT Normal  
Colvin Run at Hunter Mill Rd (One Lane B, Vienna, VA 69.2 °F - 65 °F 87% South  at  1.0 mph 0.00 in / hr 295 ft 2:50 PM EDT Normal  
Lake Fairfax, Vienna, VA 70.4 °F - 67 °F 88% South  at  0.0 mph 0.00 in / hr 275 ft 2:51 PM EDT Rapid Fire
Trott Ave, Vienna, VA 70.5 °F - 67 °F 89% East  at  0.0 mph - / hr 415 ft 2:51 PM EDT Normal  
APRSWXNET Centreville VA , Centreville, VA 70 °F - 66 °F 86% NE  at  0 mph 0.00 in / hr 308 ft 2:14 PM EDT MADIS
Rosehaven Estates, Fairfax, VA 72.3 °F 72 °F 66 °F 82% ENE  at  2.0 mph 0.10 in / hr 470 ft 2:45 PM EDT Normal  
Little Rocky Run, Centreville, VA 74.1 °F 74 °F 68 °F 80% SW  at  0.0 mph 0.00 in / hr 308 ft 2:51 PM EDT Rapid Fire  
CENTREweather, Centreville, VA 71.7 °F 71 °F 66 °F 82% North  at  0.0 mph 0.00 in / hr 262 ft 2:51 PM EDT Rapid Fire
Centreville, VA, Centreville, VA 78.4 °F 81 °F 68 °F 71% ESE  at  6.3 mph - / hr 351 ft 2:43 PM EDT Normal  
Cobbdale, Fairfax, VA 70.3 °F 71 °F 64 °F 81% SE  at  1.0 mph - / hr 394 ft 2:45 PM EDT Normal  
Villa D'este, Fairfax, VA 71.8 °F 71 °F 66 °F 83% ENE  at  1.0 mph 0.00 in / hr 354 ft 2:38 PM EDT Normal  
Beulah-Wolf Trap, Vienna, VA 70.0 °F - 66 °F 86% ESE  at  0.0 mph 0.00 in / hr 430 ft 2:47 PM EDT Normal  
NE Vienna, Vienna, VA 69.9 °F - 66 °F 86% ESE  at  0.0 mph - / hr 417 ft 2:40 PM EDT Normal  
Little Rocky Run, Clifton, VA 74.3 °F 75 °F 67 °F 78% West  at  1.6 mph 0.00 in / hr 302 ft 2:51 PM EDT Rapid Fire  
Brambleton, Brambleton, VA 69.6 °F - 66 °F 89% East  at  1.0 mph 0.00 in / hr 310 ft 2:51 PM EDT Rapid Fire  
Vienna Woods, Vienna, VA 72.1 °F 71 °F 67 °F 85% SE  at  0.0 mph - / hr 361 ft 2:37 PM EDT Normal  
Wolf Trap Woods, Vienna, VA 70.1 °F - 67 °F 90% ENE  at  0.0 mph 0.00 in / hr 0 ft 2:44 PM EDT Normal  
Cedar Crest, Chantilly, VA 71.9 °F 72 °F 66 °F 82% ENE  at  2.0 mph 0.00 in / hr 292 ft 2:49 PM EDT Normal  
Great Falls VA, Great Falls, VA 69.4 °F - 65 °F 85% SSE  at  1.0 mph 0.00 in / hr 380 ft 2:50 PM EDT Normal
APRSWXNET Great Falls VA , Great Falls, VA 68 °F - 64 °F 88% ESE  at  1 mph 0.00 in / hr 380 ft 2:15 PM EDT MADIS
Would you like to share your weather data with the rest of the world? Add Your Weather Station!